Rubber Cap, what is this for?

[maggit13]

Found this in my driveway and not sure if it's from my new Model Y or my neighbor's car. Any idea what it is? Couldn't find it on the internet at all.

It's about 1 in. in diameter

 

[akidesir]

looks like rust proofing hole covers. Rust proofing company drills holes through your panels. To cover it up they place these over them.

 

[maggit13]

looks like rust proofing hole covers. Rust proofing company drills holes through your panels. To cover it up they place these over them.

ok, so this probably didn't come from my car?

 

[laservet]

looks like rust proofing hole covers. Rust proofing company drills holes through your panels. To cover it up they place these over them.

Kind of like the old Ziebart plugs (except they were orange)?